One more idea: maybe you set some kind of global CLASSPATH on your machine that is overriding the one in the game jar?
Hello! Sorry for not responding in such a long time, i got lost with life and such, i was using the command line method u mentioned, and i got error "unable to access jarfile", looked around online and found the solution haha, i transferred over the game folder from my HDD for games to my NVME boot drive, now it works, thank you for answering though!